Method of and apparatus for forming hermetically-sealed metal sheets.



' E. T. NEWSOME.

METHOD OF AND APPARATUS FOR. FORMING HERMETIGALLY SEALED METAL SHEETS. APPLIOATION FILED D30. 29, 1910.

1,002,303. Patented Sept. 5,1911.

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. E. T. NEWSOME. METHOD OF AND APPARATUS FOR. FORMING HERMETICALLY SEALED METAL SHEETS. APPLIGATION FILED DBO. 29, 1910.

1,002,303, Patented Sept. 5,1911.

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E. T. NEWSOME. METHOD OF AND APPARATUS FOR FORMING HBRMETIGALLY- SEALED METAL SHEETS.

APPLICATION FILED DEO.29,1910.

Patented Sept. 5, 1911.

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E. T. NBWSOME. METHOD or AND APPARATUS FOR FORMING HERMETIOALLY SEALED METAL SHEETS.

APPLIOATION FILED D130. 29, 1910.

Patented Sept. 5, 1911.

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UNITED STATES PATENT OFFICE.

EDGAR .T. NEWSOME, F BOSTON, MASSACHUSETTS, ASSIGNDR TO ASBESTOS PROTECTED METAL COMPANY, OF CANTON, MASSACHUSETTS, A CORPORATION OF MASSACHU- SETTS.

METHOD OF AND APPARATUS FOR FORMING HERMETICALLY-SEALED METAL SHEETS.

1,002,303. Specification of Letters Patent Patented Sept. 5, 1911. Application filed December 29, 1910. Serial No. 599,895.

all whom it may concern:

Be it known that I, EDGAR THOMAS NEW- soME, a citizen of the United States, residing in Boston, county of Suffolk, and State 5 of Massachusetts, have invented an Improvement in Methods of and Apparatus for Forming Hermetically-Sealed Metal Sheets, of which the following description, in contogether, of an apparatus for producing her- 65 met ically sealed protected metal sheets. Figs. 3 and 4, side elevations, to be read together, of the apparatus shown in Figs. 1 and 2. Fig.6, a detail in plan to be referred to. 5%, a detail of the sealing 60 the product produced with the apparatus shown in Figs. 1 to 4.

Referring to the drawing, (1 represents a 65 kettle, vat or receptacle for holding asphalt or other coating or adhesive material 6, which will be hereinafter referred to as asphalt. The kettle a is supported by a furnace c'of fire-brick or other suitable material. 7.

Kris a specification, like letters on the draw- This invention relates to a novel method of and apparatus-tor forming hermetically sealed protected metal sheets, comprising external layers of.fibrous material, such as n accordance with this invention, the

' may be employed. The kettle a is open at 75 its top and is provided with guides for the metal sheets, said guides being herein shown as grooved bars 6 located at the side walls of the said kettle. The guides e'herein shown areprovlded with downwardly inso material and out therefrom in a substantially vertical direction bet-ween layers or webs of the fibrous material, which are fedfrom rolls located on opposite sides of the path of the metal sheet. The metal sheet on its passage through the bath of melted upwardly curved portions 12, which terminate in substantially straight and vertical end portions 18. 5

In front of the kettle b is located a runway f for the metal sheets, which are indicated' by the dotted line g. The runway f may be of any suitable construction and has its bottom 12. arranged with relation to the 90 serves to cement or ailix the fibrous layers or described. The metal sheets are fed into I the bath so as to leave a space between successive metal sheets,so that when the said metal sheets are interposed between the layers or webs of the fibrous material, suocesand provided at one end with intermeshin gears 16, 17, and are positively rotated, as y will be described. The. lower feed roll 15 I may be journaled in stationary bearings, and the upper feed roll is journaled in bearings carried by pivoted levers 18, which are acted upon by springs 19 to hold the upper feed roll down on the metal sheet with a yielding pressure, to compensate for inequalities "n. the thickness of the metal sheets.

the metal sheets, so that the side edges (sit the said webs may be cemented together by the asphalt. or other cement to seal the pro- ,tected'sheet at its opposite sides. These and other features of this invention will be same are a palr of rolls 20, 21, which have a triple function; thatis, they act as deliv- Figures 1 and 2' are plan views, to be read i cry rolls for the metal sheets 9, asfeed rolls Above the kettle a and extended across the for continuous layers, length or webs 22, 23, of asbestos or other fibrous material, and as presser rolls for said webs. The rolls 20, 21, are horizontally arranged on opposite sides 5 of the vertical path of the metal sheet, as it issues from the kettle a, namely, on opposite sides of the vertical portion 13 of the guide Ways 6, and said rolls are yieldingly pressed the free edges of the webs and for keeping the ends of the rolls clean from asphalt. The devices referred to, are preferably made in the form shown in Fig. 5, each consisting of a horizontal top plate or bar 60 having 70 a downwardly extended front edge or lip 161, a vertical bar 162 and a horizontal foot piece or plate 163, which is secured as by the screws 61 to the side frames of the apparatus, between the journal boxes 33, 34. The 7 top plates or bars 60 are provided in their lips 161 substantially in line with the op ning between the rolls 20, 21 with notc es 62, preferably V-shaped, into which the sides of the fibrous webs cemented together 30 and which. project beyond the rolls are passed, the walls of said notches serving to scrape off the cement projecting between the edges of the webs and to seal the side edges of said cemented webs. The two webs 2 2, 23, 35 with the interposed metal sheet to which they are cemented and which is represented by the broken line 64, is then carried upward over guide rollers 65, and then between feed rolls 66, 67, "located at a higher level, 90 and then. rearwardly and upwardly between a large drum or feed roll 68 and a cotiperating smaller roll 69. I

It will be understood, that the metal sheets are fed into the bath of asphalt in 95 succession, and that this feed is so timed as to leave a space between succeeding metal sheets, so that after each metal sheet has passed out of the kettle a and the webs 22, 23, have been cemented to its opposite surfaces, a portion of the two fibrous webswill be cemented together by the surplus asphalt, which is squeezed 01f of the preceding metal sheet, and that as a result the fibrous webs have interposed between them a plurality 105 of metal sheets or flat bodies, which are separated from one another by portions 70 of the webs, which are cementedtogether, after the manner represented in Fig. 6, wherein two full metal sheets g are represented by dotted lines and the parts of two metal sheets are represented by full and dotted lines.

By reference to Fig. 6, it 'will be observed that-the portions 70 of the webs 22, 23, 11 which are cemented together between adja-. cent or succeeding metal sheets, are of substantial width so as to allow of their being cut transversely at the center as indicated by thevdotted line 71 and leave the ends of the metal sheet sealed by the cemented ends of the'webs. The portions 70 of the webs cemented together between adjacent sheets, also serve as flexible connections to allow the succeeding protected metal sheets to be assembled in the form of a pile, which is done by an operator as the protected sheets pass down from the roller 68.

The delivery rolls' 20,21, may have cooperating with them suitable scraper blades toward each other by springs 24, 25, encircling stationary rods 26 supported by uprights 27 28, fastened to side bars 29, 30, located at opposite sides of the kettle a above the same and secured to vertical supports 31, 32, the springs 24 bearing at one end against the uprights 27, and; attheir other end against the boxes 33 in whichthe delivery roll 2O is journaled. The other set of springs 25 encircle the rods .26 between the boxes 34 of the rolls 21 and movable plates 134, through which the rods 26 are extended and which have secured to them adjusting screws or bolts 135 extended through the uprights 28' and provided with nuts 136. By turning the nuts 136, the plates 134 may be moved toward or from'the boxes 34 to vary the strength or tension of, the springs 25 and thereby vary the pressure of the rolls 20, 21 upon thewebs 22, 23, and the interposed sheets 9. The springs 24,125, are made of sufficient strength to firmly press the webs 22, 23, against the coated metal sheet and to draw the latter up out of the kettle. The webs 22, 23 are taken from. rolls 36, 37 of the fibrous material, which are wound upon shafts 38, 39, journaled in bearings 41, 40, mounted to slide on supports 43, 42, which are vertically adjustable on stationary brackets or arm 44, 45, secured to the side bars 29, 30. Y 40 The bearings 40, 41, for the shafts 39, 38, and their slotted supports 42, 43, are preferably arranged as represented in Figs. 1 and 2', wherein the bearing and support for one end of each of the shafts 38, 39, are represented as extended in the direction of the length of said shafts, and the bearing and support for the other end of each shaft are extended transversely of the said shafts. The bearings 40, 41, are engaged by screw rods -48,- 47, having handles 51, 50, by turning which said'bea'rings may be moved with re- 'lation to the rolls 21, 20, so as to impart the proper or desired tension on the webs and to correct the feed of the webs, and said hearing supports may be vertically adjusted'by means of the slots 53, 52, (see Figs. 3 and 4), and secured in their adjusted position by the screws or bolts 55, 56, and the roll 37 may .be further adjusted vertically by the screw rod 58. The vertical adjustment of the bearing supports compensates for the irregular thickness in the roll of fibrous material. I i 65 The delivery rolls 20, 21, have coiiperating with them at their ends devices for sealingthe kettle, delivery rolls for ing shaft 79 provided with or bars 75 extended longitudinally of the said rolls and secured as herein shown to supporting bars or rods 76 secured to the uprights 27, 28. I

The shaft of the delivery roll 20' is connected by a link chain 78 with a main or driva driving pulley 80, and the roll 20 drives the roll 21 through the gears 100, 101. The shaft 79 is connected with the shaft of the lower feed roll and with the shaft link chain 82, and the feed roll 67 is connected by the belt 83 with the feed roll 69. v

I have herein shown one construction of apparatus with which I mayprefer to carry out the process of forming the sheets shown in Fig. 6, but it is not desired to limit the invention in this respect. 1

he runway f may be provided with a movable side wall 110, which is attached by suitable bolts 112 to a stationary side wall of the runway, the movable side wall being actuated by suitable springs 113, which maintain the movable wall in position to receive sheets of standard width and which yield. sufliciently to allow slightly wider sheets to be fed through the runway, the bolts 112 sliding through-the stationary side wall.

It may be desirable to heat the metalsheets while passing down the runway,and this result may be accomplished by the perforated burner pipes runway and connected with a suitable source of supply for gas or other fuel.

The bottom it of the runway may be formed of a continuous sheet, or it may be formed of substantially parallel bars, after the manner represented in the present in stance. F

The distance between the feed rolls 15, 1.6, and the delivery rolls 20,- 21, is less than the length of the metal sheets so that the feed rolls feed thesheet through the bath until it is engaged by-the delivery rolls.

Claims:

1. In an apparatus of the class described, in combination, a kettle for containing a bath of adhesive material and provided with guides for a metal sheet on its passage through said bath, said guides having a substantially straight portion leading up out of the coated metal sheet cooperating with the delivery endof said guides, rolls upon which webs of fibrous material are wound cooperating with said delivery rolls and from which the said Webs are led under said delivery rolls to be affixed to the coated metal sheet and to be plates or bars located at from the ends of said rolls, and provided with notches through which the side edges of 'the'cemented webs are passed to seal 115 located below the for sealing the edges of the ing a metal sheet out of the axes of saidrolls and said edges, and means to. carry the cemented webs with the metal sheets interposed between them away from the delivery rolls, substantially as described.

In an apparatus of the class described, in combination, a kettle for containing a bath of adhesive material and provided with guides for a metal sheet on its passagethrough said bath, said guides having inclined portions extended downwardly from the'front end of said kettle toward the bottom thereof and then upwardly and terminating near the top of the kettle with substantially vertical end portions. feed olls cooperating with the downwardly inclined portion of the said guides, and delivery rolls cooperating with the' vertical portion of said guides, rolls upon which webs of fibrous material are wound cooperating with said which the said webs are led under said delivery rolls to be affiXed to the coated metal sheet and to be cemented together, plates or bars located at the ends of the delivery rolls and means to carry the cementedwebs with the metal sheet-s interposed between them away from the delivery rolls, substantially as described. i

3. In an apparatus of the class described, in combination, a kettle for containing a bath of adhesive material, means for guiding a metal sheet out of the kettle in a substantially vertical path, delivery rolls located, on opposite sides of said vertical path to feed the coated metal sheet out of the kettle and to apply webs of fibrous material tothe coated metal sheet, and means to seal the edges of said webs, substantially as described. f

.4. In" an apparatus of the class described, in combination, a kettle for containing a bath of adhesive material, means for ing a metal sheet out of the kettle in stantially vertical path, means layers of fibrous sides of the coated metal sheet,

for applying and means fibrous layers, substantially as described.

In an apparatus of the class described, in combination, 'a bath of adhesive material, meansv for guidthe kettle in asubstantially vertical path, delivery rolls located on opposite 'sides of said vertical path,

scrapers cooperating with the circumferences of said rolls, and scrapers cotiperating with the ends of said rolls and-located between having an opening in a plane tangential to both rolls, substantially as described.

6. In an apparatus of, the class described,

guida submaterial to the opposite.

and coiipe'rating tlierew1 th to remove adhesive material from the provided with notches I kettle for containing a inga metal sheet out of the kettle in a substantially vertical path, delivery rolls located on opposite sides of said vertical path to feed the coated metal sheet out of the kettle and to apply webs of fibrous material to the coated metal sheet, rolls' located on opposite sides of the said delivery rolls and on which the webs of fibrous-material are. wound, bearings for said web-carrying rolls, and means for adjusting said bearings to move the web-carrying rolls with relation to the delivery rolls, substantially as described. 7. In an apparatus of the class described, in combination, a kettle for containing a bath of adhesive material, means for guiding a metal sheet out of the kettle in a substantially vertical path, means for applying layers of fibrous material to the opposite sides of the coated metal sheet, means for sealing the edges of the fibrous layers, and means for conveying the sealed layers away from the said kettle, substantially as described. i

8. In an: apparatus of the class described, in combination, a kettle for containing a bath of adhesive material, substantially horifaces of the coate said delivery rolls,

zontal delivery rolls' located above said bath to receive a metal sheet on its passage up out of the said bath, rolls carrying webs of fibrous material supported above. the kettle on o posite sides of the said delivery rolls to supp y the latter with webs of fibrous material, which are a plied to the opposite surmetal sheet, and means for carrying the said webs with a plurality of metal sheets between them away from the substantially as described.

9. The method of forming protected metal sheets, which consists in passing the metal sheets' through a bath of adhesive material to cause the. said metal sheets to be coated thereby and to pass out of the bath in a substantially vertical path, to permit the .metal sheets to bewa'shed by. the surplus adhesive material flowing down over the sheet into thebath, applyingto opposite surfaces of the. coated metalsheets layers of fibrous material of greater'width than the width of the metalsheets to permit the fibrous layers to be cemented" together, timing the feed of successive metal sheets into the bath so as to leave a space between-them to permit the fibrous layers to be cemented together between adjacent sheetsand cutting the ce-' mented webs between adjacent metal sheets to" form individual sheets, substantiallyas described.

10;The method of forming protected the coated metal sheets, which consists in passing metal sheets in succession through a bath of adhesive material so as to leave a space between them applying to opposite surfaces of the metal sheets thus coated layers of fibrous material 'of greater length and width than the length and width of the metal sheets and cementing together by the coating material the said layers between successive metal sheets and at the sides thereof, sealing the side edges of the cemented layers with the coating material, ,and cutting the cemented layers between successive metal sheets to form individual protected metal sheets, substantially as described. 7

. 11. The method of forming protected metal sheets, which consists in coating the metal sheets with adhesive material, feedin W the coated metal sheets between layers 0 fibrous material of greater length and width than the metal sheets so as to leave spaces between successive metal sheets, and pressing the said fibrous layers against the opposite surfaces of the metal sheets and against each other between successive metal sheets and at the sides thereof, substantially as described.

12. The method of forming protected metal sheets, which consists in ,coating the metal sheets with adhesive material, feeding thecoated metal sheets betweeu layers of fibrous material of greater length and width than the metal sheets so as to leave spaces between successive metal sheets, and pressing the said fibrous layers against the opposite surfaces of the metal sheets and against each other between successive metal sheets and at the sides thereof, and cutting the fibrous layers between successive metal sheets, substantially as described.

13. The a method of forming protected metal sheets, which corfsists in coating the metal sheets with adhesive material, feeding metal sheets between layers .of fibrous materials of than the metal sheets so as toleave spaces between adjacent metal-sheets, and pressing the saidfibrbus layers against the opposite surfaces of the metal sheets and against each other between adj the sides thereof, and cutting the fibrous layers betweenv adjacent metal sheets, substantially as described.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

EDGAR T. NEWSOME.

' Witnesses:

JAS. I-I. CHURCHILL, J; MURPHY.

greater length and-width acent metal sheets and at 

